Weckroth, J. (1964). Studies in colour after-images: Presentation of basic data and previous studies, with some new observations and a theoretical discussion. Suomalainen Tiedeakatemia.
Citace podle Chicago (17th ed.)Weckroth, Johan. Studies in Colour After-images: Presentation of Basic Data and Previous Studies, with Some New Observations and a Theoretical Discussion. Helskinki: Suomalainen Tiedeakatemia, 1964.
Citace podle MLA (8th ed.)Weckroth, Johan. Studies in Colour After-images: Presentation of Basic Data and Previous Studies, with Some New Observations and a Theoretical Discussion. Suomalainen Tiedeakatemia, 1964.
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